package com.wbao.dianniu.viewpager;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.ViewGroup.LayoutParams;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.LinearLayout;

import com.wbao.dianniu.R;
import com.wbao.dianniu.utils.Utils;

import java.util.ArrayList;

public class MyViewPager extends FragmentActivity {
	public static final String EXTRA_IMAGE_URLS ="intent_extra_image_urls";
	public static final String EXTRA_IMAGE_INDEX ="intent_extra_image_index";
	private ImageView[] tips;// 提示性点点数组
	private ArrayList<String> url_list;
	private int currentPage = 0;// 当前展示的页码
	
	 ImageViewPagerAdapter adapter;
	 HackyViewPager pager;
	@Override
	protected void onCreate(@Nullable Bundle arg0) {
		super.onCreate(arg0);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
	    this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);//去掉信息栏
		setContentView(R.layout.activity_my_viewpager);
		pager = (HackyViewPager) findViewById(R.id.hacky_view_pager);
		// 存放点点的容器
		LinearLayout tipsBox = (LinearLayout) findViewById(R.id.tipsBox);
		Intent intent = getIntent();
		url_list = intent.getStringArrayListExtra(EXTRA_IMAGE_URLS);
		currentPage = intent.getIntExtra(EXTRA_IMAGE_INDEX, 0);
		// 初始化 提示点点
		tips = new ImageView[url_list.size()];
		for (int i = 0; i < tips.length; i++) {
			ImageView img = new ImageView(this);
			img.setLayoutParams(new LayoutParams(Utils.dip2px(this, 20), Utils.dip2px(this, 20)));
			tips[i] = img;
			if (i == currentPage) {
				img.setBackgroundResource(R.drawable.ic_focus_select);
			} else {
				img.setBackgroundResource(R.drawable.ic_focus);
			}

			LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
					new LayoutParams(LayoutParams.WRAP_CONTENT,
							LayoutParams.WRAP_CONTENT));
			params.leftMargin = 10;
			params.rightMargin = 10;
			tipsBox.addView(img, params);
		}

		adapter = new ImageViewPagerAdapter(getSupportFragmentManager(), url_list);
        pager.setAdapter(adapter);
        pager.setCurrentItem(currentPage);
        pager.setOnPageChangeListener(new OnPageChangeListener() {
			
			@Override
			public void onPageSelected(int position) {
				// TODO Auto-generated method stub
				tips[currentPage].setBackgroundResource(R.drawable.ic_focus);
				currentPage = position;
				tips[position].setBackgroundResource(R.drawable.ic_focus_select);
			}
			
			@Override
			public void onPageScrolled(int arg0, float arg1, int arg2) {
				// TODO Auto-generated method stub
				
			}
			
			@Override
			public void onPageScrollStateChanged(int arg0) {
				// TODO Auto-generated method stub
				
			}
		});
        
	}
	
}
